| 不同pH值条件下重金属Pb~(2+)的吸附解吸研究 |
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| 引用本文： | 乔冬梅,齐学斌,庞鸿宾,樊涛,赵志娟,樊向阳,李平.不同pH值条件下重金属Pb~(2+)的吸附解吸研究[J].土壤通报,2011(1). |
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| 作者姓名： | 乔冬梅 齐学斌 庞鸿宾 樊涛 赵志娟 樊向阳 李平 |
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| 作者单位： | 中国农业科学院农田灌溉研究所;中国农业科学院研究生院; |
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| 基金项目： | 国家自然科学基金资助项目(50809074); 国家科技支撑计划项目(2006BAD17B02); 国际合作项目(2006DFA72190); 中国农业科学院农业资源与农业区划研究所中央级公益性科研院所基本科研业务费专项资金(2008-16) |
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| 摘 要： | 采用1次平衡法研究了不同pH值条件下重金属Pb2+的吸附解吸特性。研究结果表明,吸附量随平衡浓度的增加而增大,随pH值的升高而增大。初始浓度为100mgL-1和pH值为7分别为初始浓度和pH值的变化敏感阈值。解吸量随吸附量的增加而增大,解吸量随吸附量变化而变化的幅度随pH值的增大而减小。解吸量随pH值的增大而减小。解析率大小顺序为:pH=3>pH=5>pH=7>pH=9>pH=11。
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| 关 键 词： | pH值 Pb2+ 吸附 平衡浓度 初始浓度 |
Effect of pH Level on Adsorption Characteristics of Pb~(2+) |
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| QIAO Dong-mei,QI Xue-bin,PANG Hong-bin,FAN Tao,ZHAO Zhi-juan,FAN Xiang-yang,LI Ping.Effect of pH Level on Adsorption Characteristics of Pb~(2+)[J].Chinese Journal of Soil Science,2011(1). |
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| Authors: | QIAO Dong-mei QI Xue-bin PANG Hong-bin FAN Tao ZHAO Zhi-juan FAN Xiang-yang LI Ping |
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| Institution: | QIAO Dong-mei1,2,QI Xue-bin1,PANG Hong-bin1,FAN Tao1,ZHAO Zhi-juan1,FAN Xiang-yang1,LI Ping1(1.Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences,Xinxiang 453003,China,2.Graduate School of Chinese Academy of Agricultural Sciences,Beijing 100081,China) |
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| Abstract: | The balance method was used to study the adsorption-desorption of Pb2+ under the condition of different pH levels.The results showed that the adsorption capacity increased with the balance concentration,and increased with the pH values.Initial concentration of 100 mg L-1 and pH of 7 were the threshold of sensitive change.Desorption quantity increased with adsorption capacity,and the amplitude decreased with pH valudes.Desorption quantity decreased with pH values.And the order of desorption rate was:pH=3>pH=... |
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| Keywords: | pH value Pb2 Absorption Balance concentration Initial concentration |
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